Lifting-jack for vehicles.



A. P.. GOTTRELL. LIFTING JAGK FOR VEHICLES.

APPLICATION FILED 00125, 1907.

Patented Mar; 2, 1909.

in case:

llll'l r v r ri "2 i 1 a ALBERT P. OOTTRELL, OP POMONA, MISSOURI.

LIFTENG-JAGK FOB VEHICLES.

Application filed October 5, 1967.

Specification of Letters Patent.

Patented March 2, 1909.

Serial Ho. $536,066.

To all whom it may concern:

Be it known that 1, Amateur Qo'r'rnnrr,

a citizen of the United States, residing at Po- 2 inona, in the county of Howell which the following is a specification.

This invention relates to a lifting ack for In the accompanying drawing, which illustrates certain of the embodiments of the invention, Figure 1 is a side elevation of the combined jack and truck showing the plat form in elevated position. Fig. 2 is a plan view thereof.

Similar reference characters are employed to designate corresponding parts throughout the several views.

Referring to the drawing A designates the frame or body of the device which is mounted on axles 1 and 2 that carry wheels 3 for permitting the combined jack and truck to be readily moved about.

Mounted on the truck or vehicle is a platform B of any approved design, the same consisting, in the present instance, of two longitudinal bars and two cross bars, and being adapted to be raised and lowered. this purpose the platform is supported on links 7 that are pivotally connected to the platform at 8 and to the body A at lhe links are arranged in pairs and each pair comprises a bar ll) which extends transversely to the body A and has its ends bent in right angles to form the links 7 the free e tren'iity of the links being inwardly bent to f m alining pintles 11 that bea in the openings 8 in the platform, the bar being journaled near the links 7 in bearings 12 on the said body of the truck. By mounting the platform in this manner the latter can be raised or lowered by a curvilinear movement.

The platform B is provided with a front and a rear cross bar 2 and 2 having their opposite ends secured respectively to the platform. The front portion of the truck is provided with a rock-shaft 15 having its opposite ends pivoted in the side bars of the frame of the truck and to the central portion of the rock-shaft 15 one end of a tongue l is secured to the opposite end of the tongue having a versely across the 1 handle 6 for operating the same.

and State or Missouri, have invented new and useful improvements in Lifting-Jacks for Vehicles, of

" tongue is swung For ' nection between them,

The platiorm is adapted to be raised b r the manipulation of the tongue and to his end the tongue has one end of a rod pivoted thereto the opposite end of the rod being pivoted to the rear cross bar 2, whereby when the forwardly and downwardly the platform will be raised. The parts are so arranged and proportioned that when the tongue is fully depressed so that the free end v. ll bear against the ground th platform will be locked in elevated position and is incapable of dropping forwardly orb ackwardly.

; The front end. of the connecting rod 13 may be detachably connected with the tongue by a hook 14 so th at by disconnecting the said rod from the tongue the device can be used solely as a truck, it being understood that the platform will rest flat on the body A. When the connecting rod is detached the tongue can be freely moved for enabling the truck to be wheeled about in carrying a load.

When the device is desired to be used as a lifting jack for raising a vehicle, the device is wheeled under the vehicle while the platform is in lowered position. When the device is in he proper relative position to enable the platform to engage one or both axles of the vehicle the tongue is swung forwardly and downwardly so as to raise the platform. l l h en the platform is fully raised the links 7 are inclined forwardly from the vertical so that the platform tends to drop in a forward direction under the weight of the vehicle. This, however, is prevented by means of the tongue bearing on the ground. it will also be noted when the platform is fully elevated the tongue l and connecting rod 13 are dis posed in such a manner that the point of conor the hook or fastening 14:, is located right to one side of the line a, 5, connecting the rear end of the said rod and front end of the tongue. It will thus be seen that the platform will be locked against 1 a rearward movement. With a construction of the character described the movement of the tongue accomplishes the two-fold function of raising the platform and locking the same in raised position.

Having thus described the invention, what I claim is z- A structure of the character described comprising an elevator mounted on a wheeled truck, a plurality of links pivotally connected to the truck frame and extending transsame and bent vertically wardly and downwardly by means of said rock bar so as to raise the platform in an elevated position, the same being held in 15 'sueh position by means of lowering said tongue.

In testimony whereof I affix my signature I in presence of two witnesses.

ALBERT P. COTTRELL.

upward and having pintles thereon, a platform with side bars secured to said pintles, the side bars of the platform having a front 1 and a rear cross bar secured thereto, a rock shaft having its opposite ends pivoted to the side bars of the truck frame, a straight rod of a length equal to the length of of the platform having one end hinged to the rear cross bar of the platform, the opposite end of said bar being detachahly hinged to the tongue, and said tongue the side bars Vvitnessesz A. M. TOWNSEND, R. H. BILLINGS.

W1th the rod hinged thereto adapted to be swung for- 

